Starting switch for electric starting motors



1,624,255 April l2 1927. y E. KYHL STARTING SWITCH FOR ELECTRIC STARTING MOTORS Filed Dec. 3, 1925 mi 61mm,

Patented Apr. 12, 1927.

UNITEDy STATES4 EMIL KYHL, OF BRITT, IOWA.

STARTING SWITCH FOR ELECTRIC STARTING MOTORS.

Application led December 3, 1925. Serial No. 72,972.

My invention relates to improvements in starting switches for electric 'starting motors, and the object of my improvement is to supply an adjustable, simple and effective vdevice of this class, constructed for permanent usefulness in service.

This object I have accomplished by the means which are hereinafter described and claimed, and which are illustrated in the accompanying drawings, in which Fig. 1 is a side elevation of an electric starting motor, such as is employedfor starting the vehicle engine particularly for Ford motor cars, and showing partly in elevation and partl in section' my improved starting switcI therefor. Fig. 2 is a full size-elevation of the switch taken at an angle of ninety degrees relative to the elevation of said Fig. 1, and having parts taken on central vertical section. Fig. 3 is a face elevation cfa propelling finger or pusher adapted for use in actuating the trigger element of my device in one direction. v

The numeral l denotes a conventional electric starting motor, pantser accessories not being shown, but which has one electric terminal 2, projecting without and exteriorly threaded. On the projecting part of this terminal is mounted an adjusting nut 7 to adjustably support an apertured angulaimember 8 made of elastic plate as oll steel. The terminal part 2 traverses the aperture in the member 8 and has a. lock-nut 5 mountied thereon above and contacting with the member 8 to tightly lock this member to project laterally from the terminal. For a purpose to be described, the terminal 2 has an extension member 3 the lower part ot' which is exteriorly threaded to take a nut 4 and the upper end'of' the threaded terminal 2 also is meshed in this nut 4, whereby the said extension member 3 is mounted on the terminal 2 for longitudinal adjust.- ments relative thereto. As shown in Fig. 1, the member 8 has its aperture 6 longitudinally lengthened so that the nuts 5 and 7 i may hold the member 8 in an adjusted position laterally upon theterminal 2. j

y An oblong late 9 of elasticinsulation is fastened on t e. upwardly-directed part of the angular member.` A bar l0 has its lower end'fastened on theupper part of the insulationl plate and then yis bent slopingly' over the upper end of the terminal part 3 and thenbent again slopingly upwardly, and

used as a" trigger member, at ll.

The insulation plate 9 is medially transversely apertured to seat a threaded member 13 therethrough secured by the nuts 141 and 16 on owiosite sides for adjustment laterally relative to the plate 9 and so vthat the member 13 as an electric terminal may be posi tioned angularly relative to the other terminal part 3 and to be shifted into make and break contact therewith by means to he described. The cable conductor 15 is endclipped between the plate 9 and the nut 16.

The numeral 17 denotes a trigger pusher bar, positioned substantially vertically to contact at its lower end with one face of the trigger 11 just above its angular bend. The pusher plate or bar 17 is crimped slopingly or obliquely` at its upper end in registration with a like crimp 22 on a smaller clampingplate 18, and the latter is fastened by bolts 20 and nuts 19 to thelbar 17 to clamp therebetween one end of a rod 21, the upper part being broken away but which in extension to the dashboard of a car, may be manipulated to cause the pusher 17 to push in one direction against the trigger 11 to shift or rock this member together withv the elastic insulation 9 and member. 8 to make and break contact of the terminals aforesaid.

This switch device is very quickly responsive and reactive in use and the elastic elements cannot become warped or bent out of line, and the different adjustments shown are used to true u) the contacts as necessary. By this means the sparking can be exactly retarded or advanced, as necessary in the well-known use of the starter 1 on Ford cars.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is:

1. A device of the character described, comprising an electric terminal, an elastic plate of insulation bracketed on said terminal, another electrical terminal mounted on said insulating device at an angle to the first-mentioned terminal, and a reciprocable member movable for laterally shifting said insulating device to effect contact between said terminals.

2. A device of thebcharacter described,

removably and for lateral adjustment rela# tiveythereto', lanother electric terminal `mounted for lateral adjustment on said insulating, device atan angle to the tirst-men tioned terminal, a trigger-fixed terminally on said (plate, and means for laterally shifting sai trigger and insulating plate to effect contact between said terminals.

3. A device of the character described, comprising a two part electric terminal whose parts are movably connected for relative longitudinal adjustment, an angular member one limb of which is bracketed to extend laterally from the lowermost part of said terminal, an insulating plate mounted angularly on said angular member, said anar member and said insulating plate being elastic, an angular trigger mounted terminally on said late, and another electric terminal mounted on said insulating late angularly relative to the first-mentione terminal and adapted when said trig r is moved in one direction to be.. shift into lateral contact with the uppermost part of the first-mentioned terminal; and to break contact therewith. i

4. A device of the character described, comprising a two-part electrical terminal whose parts are adjustabl connected, means for holdin them in adjusted positions, a bracket adjustably mounted on and for ndjustments to and from said terminal, au elastic insulating late mounted on said bracket, a bent trlgger member mounted terminally upon said insulating device, another electric terminal adjustably mounted on said insulating device angularly relative to the u per part of the two-part terminal to be shi ed into contact therewith by movement laterally thereagainst, and a'shifting rod having a removable pressure finger loosely engaging one face of said trigger member to releasably force the cond terminal into contact with the first terminal.

ln testimony whereof I ailix my signature.

EMIL KYHL. 

